Odometer



. T AVAILA I F. F. DORSEY.

0DOMETER.-

APPLICATION FILED JUNE 8, I921.

Patanted Mar. 14, 1922..

IFII Q 4 llnvemltw '55 'cas ng I uNiTEo STATES" COPY PATENT OFFICE.-

rammn F. DORSEY. OF noonns'rsai NEW YORK. ASSIGNOR T0 non'rn EAST ELEC- TRIO COMPANY. OF-ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

in theart'to which it apperta'ins to make and use tlie same. 'llns invention relates to odometers or snnllar reglstering instruments, n which ing-wheels manually, either to zero or any. required number.

. The object of the invention is to produce an odometer in which the construction of the driving and resetting mechanism is simple. compact and conveniently Operable.

To the foregoing end the invention consists in the construction and arrangement of the odometer hereinafter described, as it is defined in the appended claim.

In the accompanying drawings, Fig. 1 is a front-elevation of odometer mechanism embodying the present invention; Fig. 2 is a right-hand end-view of the same; Fig. 3 is a plan-view of the mechanism, showing parts of the frame and the casing of the instrument in section; and Fig. tie a view partly sectional on the line 44 in Fig. 2.

The invention is illustrated as embodied in an odometer of a type commonly used on motor-vehicles. the instrument comprising two trains'ofi. registering or counting-wheels .5 and 6, of'whic-h the wheels 5- give a perm'anent and complete registration of the distance traveled, while the wheels 6 constitute what is commonly called the trip-train, bein arranged to be reset whenever desired by t ie'user.

The counting-wheels are all mounted concentric with a drive shaft 7. 'whichis actuated. through intermediate mechanism, by a worm-wheel 8. "The mechanism for driving and for interconnecting the wheels need not be further described, as such mechanisms are well known. and the specific arrange ment employed has no connection with the present invention. The counting-wheels are enclosed in the usual cylindrical casing 9, of which only a 7 small pjortion is shown,- the front of this eing' closed by a glass plate 10, and

Application and am a, 1921. Serial No. 476,060.

- provision ismade for resetting the count-- 15 ODOMETER.

J Specification of Letters Patent. Patented Liar; 14, 19,22

a face-plate 11, secured in place by a; bezel-" ring 12. The mechanism of the instrument is supported by a frame 13, enclos'ed'within the casingbut provided with an integral. bearing-block 14 which projects outwardly 6 through the side of the casing." This bear ing-block is provided with a horizontal opening through which the drive-shaft 7 extends to the outside of the bearing block, this opening including a slot 15 extending to the front of the block, so that the shaftmay be conveniently. introduced into "the bcaringf The bearing-Opening is provided with a bearing-sleeve 16 which is of greater diameterthan the slot 15."and which serves both to provide a suitable bearing-surface for the shaft and to secure the. shaft in p0 sition. This arrangment constitutes no part of the present invention.

At its outer end the drive-shaft is provided with a pinion 17 which meshes normally with a gearJeS. The gear'is fixed On the outer end Ota-Iay-Shaft 19, and this lay-shaft is arranged to turn and also to move lengthwise in a second bearing-Opem ing extending through the block 14. Qn the inner end of the lay-shaft isfixed a pinion .20. which meshes constantly with a wideface car 21. This gear is loosely mounted upon the drive-shaft. so that it may turn indepeinlently of the shaft.

Fixed to the gear 21 is a drive-plate 22, 4 which has lugs 23 cooperating with suitable recesses ou the first wheel of the trip-train (3. Through the connections just described the trip-train is driven by rotation of the gear. 21. In the normal operation of the instrument. therefore. as the drive-shaft 7 rotates in accordance with the. speed of the vehicle, the trip-train is driven by the o eration of the parts 17,18, 19,20, 21 an 22. The engagement of the gear 18, with the pinion 17 is normally maintained by a coiled a knurledhead 29; by which it may be conienin'tlymani ulated. -Agroove 30, turned -"-.in'the sha ft 2 is engaged by a hairpin- "jlsp r ing 31, shown in -dotted lines. in Fig. 1

thrsuspring being enclosedin a'casing 32 r-mmmed on the braeket26. The s l'bf-jQiitain the resetting shaft in its operative g d sitiomfwith' the gears 18 and 28 in mesh.

7 he oonical portion 27 forces the lay-shaft inwardly, thus disengaging the gear 18 from the in-Ion 17.. The lay-shaft may then be 'li 'ffree yltzirndrby rotation of the resettingf'ihaft; in" either direction, and this motion 15 eounting-wheel's 6. Afterthe resetting oper' at ionfhasbe'en performedjthe shaft 25 is rearwardly, .thus permitting the -.-sp'rin'g 24 to force the lay-shaftoutwixrdlj apsxnitted to the first of the series. of-

"eonnting-wheels;

955T AVAILABLE com I The intention is not limited tothe eliibod- .iment thereof hereinbeforedescribed ,and

illustrated in 'the accompanying-drawings; but it may be embodied in, variousothei forms-withirifthe scope of the following 39 claim. I I

The invention olauned is:'

An odometer comprising; a frame-member provided with two parallel bearings; a

drive-shaft and a lay-shaft mounted in said bearings respectively; 'a set of (mint i .wheels concentrie' with a the drive-shaft; a gear connected with the first counting-wheel and freely rotative about the-drive-shaft in-f side said frame-member; a2 inionon the '40 inner end of thela'yshaft an; ,mes hing.con-

Stantly with said gear; apinion on the outeijf end of the drive-shaft; a gearbnthe outer. end of the lay-shaft and jmeshingnormally -with the.last mentioned,,pinion and means 45 I g -form0ving; the lay-shaft leiiQthWiseQto dist jagain as toengage the gear 18 with the p1niofij'17, and the normal driving of the; meehanism by the drive-shaft 7 is thus rezlisumed.

ngage' the {last-mentioned and. for rotating th 51w; h

- gear andip inlon. 

